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CVE-2025-62727

HIGH

7.5

Descricao

Starlette is a lightweight ASGI framework/toolkit. Starting in version 0.39.0 and prior to version 0.49.1 , an unauthenticated attacker can send a crafted HTTP Range header that triggers quadratic-time processing in Starlette's FileResponse Range parsing/merging logic. This enables CPU exhaustion per request, causing denial‑of‑service for endpoints serving files (e.g., StaticFiles or any use of FileResponse). This vulnerability is fixed in 0.49.1.

Detalhes CVE

Pontuacao CVSS v3.17.5

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado10/28/2025

Ultima modificacao11/4/2025

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-407

Referencias

https://github.com/Kludex/starlette/commit/4ea6e22b489ec388d6004cfbca52dd5b147127c5(security-advisories@github.com)

https://github.com/Kludex/starlette/commit/69ed26a85956ef4bd0161807eb27abf49be7cd3c(security-advisories@github.com)

https://github.com/Kludex/starlette/releases/tag/0.49.1(security-advisories@github.com)

https://github.com/Kludex/starlette/security/advisories/GHSA-7f5h-v6xp-fcq8(security-advisories@github.com)

https://github.com/Kludex/starlette/security/advisories/GHSA-7f5h-v6xp-fcq8(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlacoes IOC

Sem correlacoes registradas

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